Bug 24146: Increment existing fine

We should increment an existing fine even if it has been fully paid off
whilst it is still incrementing and not create a new fine.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

C4/Overdues.pm

@@ -526,8 +526,7 @@ sub UpdateFine {
     my $overdues = Koha::Account::Lines->search(
         {
             borrowernumber    => $borrowernumber,
-            debit_type_code   => 'OVERDUE',
-            amountoutstanding => { '<>' => 0 }
+            debit_type_code   => 'OVERDUE'
         }
     );
 
@@ -561,7 +560,6 @@ sub UpdateFine {
         }
     }
 
-
     if ( $accountline ) {
         if ( $accountline->amount != $amount ) {
             $accountline->adjust(